Jake Birtwhistle (triathlon) completed a full set of medals at his second Commonwealth Games in Birmingham, adding a bronze in the mixed relay to his gold (mixed relay) and silver (individual) medals from the Gold Coast 2018 Games. Originally more comfortable in athletics, Birtwhistle won the World School Cross Country in Malta in 2012 after claiming 11 junior Australian titles on the track over 1500m and 3000m steeplechase between 2009 and 2012. He started to move to triathlon in 2013, but still claimed the coveted under-20 title at the Zatopek event, as well as being runner up in the under-20 road running championships two years later. Birtwistle claimed the 2014 junior duathlon world title and silver at the world junior triathlon event. He was part of Australian team that won 2017 mixed relay world title in Hamburg and outstanding results in 2019 – including wins in Leeds and Hamburg – saw him end the year ranked world no.6, earning an early nomination for an Olympic spot in Tokyo where he was the first Australian home in 16th.